delete logs during CATS setup as root
improve warning message when route to delete is not found

[Finishes #68241016]
In fake route repo, store guids of multiple deleted routes
Add -r flag to delete command

For deleting all the routes mapped to the app
[Finishes #65781990]
refactor endpoints_test
refactor domains api test
test cleanup for events
Remove ast rewriter

You had a nice long life, but now its time to move on
Improve test http server path matching

Instead of relying on the order of the query args in the string, we could
just use the builtin tools in the stlib to make matching this a lot more
robust.
'cf events' only shows last 50 events in reverse chronological order

[Finishes #67248400, #63488318, #66900178]
Add more helpful tip to logs command when loggregator cert is invalid
Changed restage to restart message when scaling an existing app
[finishes #67247452]
Changed disk quota to disk limit
[finishes #68252714]
Update user-provided service help text to refer to instances
[finishes #64927618]
refactor listing domains

During push, all domains are requested

[#64525814]
Remove DomainRepo methods for shared and private domains

[#64525814]
Update the service help text to refer to instances
[finishes #64927256]
Update failed auth and login messages to refer to credentials
[finishes #66713558]
Improve description for stack
[finishes #67586040]
Improve descriptions for stack in push
[finishes #67585950]